native gitprompt

gitprompt.sh

gitprompt() {

    export GIT_PS1_SHOWDIRTYSTATE=true
    export GIT_PS1_SHOWSTASHSTATE=true
    export GIT_PS1_SHOWUNTRACKEDFILES=true
    export GIT_PS1_SHOWUPSTREAM="auto"
    export GIT_PS1_SHOWCOLORHINTS=true
    export PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'

    . /usr/lib/git-core/git-sh-prompt
    export PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '

}